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| author | Laszlo Ersek <lersek@redhat.com> | 2020-02-26 23:11:43 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-03-04 12:22:07 +0000 |
| commit | c69f6406b9b306c32a9b0ef32fb2fa757f773551 (patch) | |
| tree | 2718b1c3dd895e404b214ed946daa8a3a9ea3d51 /OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c | |
| parent | 90e11edd16c7a97e3d5fd79f67acaab7c2777d79 (diff) | |
| download | edk2-c69f6406b9b306c32a9b0ef32fb2fa757f773551.tar.gz edk2-c69f6406b9b306c32a9b0ef32fb2fa757f773551.tar.bz2 edk2-c69f6406b9b306c32a9b0ef32fb2fa757f773551.zip | |
OvmfPkg: clone SmmCpuPlatformHookLib from UefiCpuPkg
Clone the Null instance of SmmCpuPlatformHookLib from UefiCpuPkg to
OvmfPkg. In this patch, customize the lib instance only with the following
no-op steps:
- Replace Null/NULL references in filenames and comments with Qemu/QEMU
references.
- Update copyright notices.
- Clean up and rewrap comment blocks.
- Update INF_VERSION to the latest INF spec version (1.29).
- Update FILE_GUID.
- Drop the UNI file.
This patch is best reviewed with:
$ git show --find-copies=43 --find-copies-harder
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1512
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200226221156.29589-4-lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c')
| -rw-r--r-- | OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c b/OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c new file mode 100644 index 0000000000..257e1d399c --- /dev/null +++ b/OvmfPkg/Library/SmmCpuPlatformHookLibQemu/SmmCpuPlatformHookLibQemu.c @@ -0,0 +1,108 @@ +/** @file
+SMM CPU Platform Hook library instance for QEMU.
+
+Copyright (c) 2020, Red Hat, Inc.
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <PiSmm.h>
+#include <Library/SmmCpuPlatformHookLib.h>
+
+/**
+ Checks if platform produces a valid SMI.
+
+ This function checks if platform produces a valid SMI. This function is
+ called at SMM entry to detect if this is a spurious SMI. This function
+ must be implemented in an MP safe way because it is called by multiple CPU
+ threads.
+
+ @retval TRUE There is a valid SMI
+ @retval FALSE There is no valid SMI
+
+**/
+BOOLEAN
+EFIAPI
+PlatformValidSmi (
+ VOID
+ )
+{
+ return TRUE;
+}
+
+/**
+ Clears platform top level SMI status bit.
+
+ This function clears platform top level SMI status bit.
+
+ @retval TRUE The platform top level SMI status is cleared.
+ @retval FALSE The platform top level SMI status cannot be
+ cleared.
+
+**/
+BOOLEAN
+EFIAPI
+ClearTopLevelSmiStatus (
+ VOID
+ )
+{
+ return TRUE;
+}
+
+/**
+ Performs platform specific way of SMM BSP election.
+
+ This function performs platform specific way of SMM BSP election.
+
+ @param IsBsp Output parameter. TRUE: the CPU this function
+ executes on is elected to be the SMM BSP. FALSE:
+ the CPU this function executes on is to be SMM AP.
+
+ @retval EFI_SUCCESS The function executes successfully.
+ @retval EFI_NOT_READY The function does not determine whether this CPU
+ should be BSP or AP. This may occur if hardware
+ init sequence to enable the determination is yet to
+ be done, or the function chooses not to do BSP
+ election and will let SMM CPU driver to use its
+ default BSP election process.
+ @retval EFI_DEVICE_ERROR The function cannot determine whether this CPU
+ should be BSP or AP due to hardware error.
+
+**/
+EFI_STATUS
+EFIAPI
+PlatformSmmBspElection (
+ OUT BOOLEAN *IsBsp
+ )
+{
+ return EFI_NOT_READY;
+}
+
+/**
+ Get platform page table attribute.
+
+ This function gets page table attribute of platform.
+
+ @param Address Input parameter. Obtain the page table entries
+ attribute on this address.
+ @param PageSize Output parameter. The size of the page.
+ @param NumOfPages Output parameter. Number of page.
+ @param PageAttribute Output parameter. Paging Attributes (WB, UC, etc).
+
+ @retval EFI_SUCCESS The platform page table attribute from the address
+ is determined.
+ @retval EFI_UNSUPPORTED The platform does not support getting page table
+ attribute for the address.
+
+**/
+EFI_STATUS
+EFIAPI
+GetPlatformPageTableAttribute (
+ IN UINT64 Address,
+ IN OUT SMM_PAGE_SIZE_TYPE *PageSize,
+ IN OUT UINTN *NumOfPages,
+ IN OUT UINTN *PageAttribute
+ )
+{
+ return EFI_UNSUPPORTED;
+}
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